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A089186
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Decreases from 9 * 10^k down to 1, restarting at 9 * 10^(k+1).
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6
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9, 8, 7, 6, 5, 4, 3, 2, 1, 90, 89, 88, 87, 86, 85, 84, 83, 82, 81, 80, 79, 78, 77, 76, 75, 74, 73, 72, 71, 70, 69, 68, 67, 66, 65, 64, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 49, 48, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28
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OFFSET
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1,1
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COMMENTS
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Points of local maxima: 9 * 10^k.
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LINKS
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FORMULA
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a(n) = 10^{floor(log_10(n)) + 1} - n.
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MATHEMATICA
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Join[Range[9, 1, -1], Range[90, 1, -1]] (* Harvey P. Dale, Jun 06 2013 *)
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PROG
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CROSSREFS
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KEYWORD
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base,easy,nonn
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AUTHOR
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Artemario Tadeu Medeiros da Silva (artemario(AT)uol.com.br), Dec 07 2003
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STATUS
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approved
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